Description

n-Octadecylpropane-1,3-Diamine is a high-purity, long-chain aliphatic diamine compound, also known as N,N-Bis(3-aminopropyl)octadecylamine. This versatile chemical intermediate is valued for its dual amine functionality and hydrophobic C18 tail, enabling it to act as an effective surfactant, corrosion inhibitor, and adhesion promoter. It is primarily utilized in the formulation of specialty surfactants, epoxy curing agents, asphalt emulsifiers, and mineral flotation agents for industries including coatings, construction, oilfield chemicals, and mining.

Application

• Surfactant & Emulsifier Synthesis: Key intermediate for producing cationic and amphoteric surfactants used in fabric softeners, personal care products, and asphalt emulsions.
• Epoxy Curing Agent: Acts as a hardener and flexibilizer in epoxy resin systems for coatings, adhesives, and composites, improving chemical resistance and adhesion.
• Corrosion Inhibition: Formulated into oilfield chemicals and industrial water treatment solutions to protect metal surfaces in harsh environments.
• Mineral Processing: Employed as a collector or modifier in the flotation process for beneficiating ores such as potash and phosphate.
• Asphalt Modification: Enhances the adhesion of asphalt to aggregate surfaces in road construction and roofing materials.
• Textile & Leather Auxiliaries: Used in the production of softening and anti-static agents for fibers and leather finishing.
• Pharmaceutical & Agrochemical Intermediates: Serves as a building block for synthesizing more complex molecules in these sectors.

Basic Information

Product Name	n-Octadecylpropane-1,3-Diamine
CAS No.	4253-76-3
Molecular Formula	C₂₁H₄₆N₂
Molecular Weight	326.61 g/mol
Synonyms	N,N-Bis(3-aminopropyl)octadecylamine; Octadecyl-1,3-propanediamine; 1,3-Propanediamine, N-octadecyl-; N-Octadecyl-1,3-diaminopropane; Stearylpropylenediamine; Armeen® Z; Dinoram S; Kemamine® D-190; C18 alkyl propyl diamine
EINECS	224-236-9

Quality Control

Our n-Octadecylpropane-1,3-Diamine is manufactured under a strict quality management system. Each batch is analyzed to ensure it meets precise specifications for purity, color, and amine value. A comprehensive Certificate of Analysis (COA) is provided with every shipment, detailing results from tests including assay, identity, and impurity profiles. We support compliance with global regulatory frameworks such as REACH.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong bases and incompatible materials such as strong oxidizing agents. The product is hygroscopic; ensure containers are sealed after use to minimize moisture absorption.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 95.0%
Primary Amine Content	≥ 98% of total amine
Color (Gardner)	≤ 3
Water Content (KF)	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.